fix(data): 增加全局保存失败保护

apps/web/components/layout/LayoutShell.tsx

@@ -3,6 +3,7 @@
 import { usePathname } from 'next/navigation';
 import { Sidebar } from '@/components/layout/Sidebar';
 import { AuthGuard } from '@/components/AuthGuard';
+import { ServerDataSaveErrorBanner } from '@/components/ServerDataSaveErrorBanner';
 
 export function LayoutShell({ children }: { children: React.ReactNode }) {
   const pathname = usePathname();
@@ -10,6 +11,7 @@ export function LayoutShell({ children }: { children: React.ReactNode }) {
 
   return (
     <AuthGuard>
+      <ServerDataSaveErrorBanner />
       {isLoginPage ? (
         <>{children}</>
       ) : (